Spinning-roll.



E. KEMPSHALL.

SPINNING ROLL.

APPLICATION FILED JAN. 29, 1913-.

1,074,503, Patented Sept. 30, 1913.

STATES PATENT oFra-cu.

EIIIIEIAZIEIIIR, KEMPSHALL, OF NEW YOBK, N. 'Y., ASSIGNOR'TO' KEMPSHALLSUPPLY .COMPANY, A CORPORATION 01 NEW JERSEY.

SPINNING-REEL.

speeification ofiettersfatent.

Patented Sept..30,11913.

To all whom it may concern:

Be it known that I, ELEAZER iKEMPsl-IALL, citizen of the United States,residing at New York, in the countyof New York and State of New York,have invented certain new and useful Improvements .in Spinning-lions;and I do hereby declare the following to be a full, clear, and exactdescription of .the.

invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters or figures of reference markedthereon, which form a part of this specification.

This invention relates to improvements in spinning machine rolls. Inthis art I am familiar with rolls composed of rubber and a layer offabric forming a base, and coated with pyroxylin, but I find inpractical use. the rubber and fabric forming the base of the roll soquickly rebounds that when a knot in a thread passes between the rolls,it forces the thread out of alinement, and not infrequently breaks thethread. I am also familiar with rolls having a base formed of felt andleather, but by actual experience such a construction will last, at

' the most, but a few weeks. The fabric packs or wads in the center, andthe leather soon assumes a corresponding shape, and in time the centralperipherical portion of the roll becomes concave, and the threadoperated upon will not be twisted.

According to my present invention, I propose to use rubber and leatheras a base for the roll, so that while the mass will yield when a knot orenlargement on the thread passes between a pair of rolls, it will notdestroy or in any manner distort the alinement of the thread.

The object of my present invention is to so construct the roll thatwhile it will yield, it will be slow in assuming its normal position,and will not tend to exert a quick or impulsive action on the threadwhen an enlargement passes between a pair of rolls, and at the same timethe base will be prevented from spreading laterally, and thelongitudinal surface of the roll will be maintained in alinement.

Another object of the present invention is to provide a base which willreadily become impregnated on its outer surface with a layer of yieldingpyroxylin, or other similar plastic material, so as to form with theImthe accompanying drawings: Figure 1 is an lelevation-of a pair ofrolls, one of which is broken away, to illustrate the construction.Fig-Qis an enlarged detail-cross section of one of the rolls.

.1 .indicates a metal shaft on which is mounted a metal core, 2. Thecore supports a layer of soft rubber 3, reinforced with fabric,indicated at 3". Fitted tightly around the rubber 3, is a thin binder ofleather 3*, which confines the rubber, and serves to protect it andcounteract the resiliency. The leather is coated with pyroxylin, orother similar plastic material, indicated at 4, to provide a smoothouter surface.

A roll constructed as described has all the essential yieldingcharacteristics, and yet I successfully overcome the annoyance andexpense caused by the breaking, or slipping of the threads. Theconstituency of the pyroxylin is such that it will sufficiently yieldwith the leather and rubber, and will not crack. But quick rebounding ofthe rubber is retarded by the slow yielding action of the leather, andas the two are bound together in a mass, obviously the slow action ofthe leather when assuming its normal position will in turn cause thepyroxylin to return slowly with it to the normal position.

It is of the greatest importance in a roll such as used in this art thatthe resiliency be regulated so as to prevent too quick rebound of themass, and at the same time it is absolutely essential that the surfaceof the roll be of material possessing a certain amount of flexibility,and yet be of sufficient strength to afford protection to the yieldingbase. I find a roll constructed of rubber and a binder of leather may beused to decided advantage, in that the life of the roll is considerablyprolonged, and while such a construction is effective in certain limits,to obtain the most lasting results I form a coating of pyroxylin on theleather, the pyroxylin or other similar material being of differentdensity than the leather to protect the latter.

As heretofore stated, soft rubber is employed, in preference to felt, soas to maintain the uniform shape of the roll, for bviously the rubberwill rebound to normal ing a hard core, a layer of soft rubber on thecore, a binder of leather around the rubber, and a coating of plasticmaterial on the leather.

2. A roll comprising a hard core, a layer of soft 'elding material onthe core, a

leather binder around the soft yielding ma- 20 terial and a coating ofplastic material of different density than the leather around thelatter.

In testimony whereof I have signed my name to this specification in thepresence of 25 two subscribin witnesses.

E JEAZER KEMPSHALL. Witnesses:

JNO. IMIRIE, EMILY F. CAMP.

